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https://github.com/vale981/arb
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51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*=============================================================================
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This file is part of ARB.
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ARB is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2012 Fredrik Johansson
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******************************************************************************/
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#include "fmpr.h"
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double
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fmpr_get_d(const fmpr_t x, fmpr_rnd_t rnd)
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{
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double r;
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mpfr_rnd_t mrnd;
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mpfr_t t;
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mp_limb_t tmp[2];
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if (fmpr_is_zero(x))
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return 0.0;
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mrnd = rnd_to_mpfr(rnd);
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t->_mpfr_prec = 53;
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t->_mpfr_sign = 1;
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t->_mpfr_exp = 0;
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t->_mpfr_d = tmp;
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fmpr_get_mpfr(t, x, mrnd);
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r = mpfr_get_d(t, mrnd);
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return r;
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}
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